How about this; each shop has unlimited storage slots, but only the first 100 slots can not be stolen from. Ofcourse the player will be able to buy more safe slots, but they will be increasingly more expensive up to a point where it makes more sense to use the unsafe slots and invest in traps.
This way players can choose whether they participate in the thieving game or not. They'll also be able to choose which items they want to put at risk by picking the kind of slot they put it in.
Slashdot Mirror
How about this; each shop has unlimited storage slots, but only the first 100 slots can not be stolen from. Ofcourse the player will be able to buy more safe slots, but they will be increasingly more expensive up to a point where it makes more sense to use the unsafe slots and invest in traps. This way players can choose whether they participate in the thieving game or not. They'll also be able to choose which items they want to put at risk by picking the kind of slot they put it in.